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1992 Mitsubishi Montero - Page 6 Questions & Answers
Check list for answers to my Montero
Methods to trouble shoot
(1) check thermostat device. if thermostat is stuck - not working half the water used in cooling system is missing once engine heats up which can lead to over heating. (may need mechanic to check this)
(2) check radiator has water in it . if it is low there may be a leak in cooling system somewhere check rubber hose and radiator are not leaking.
(3) check fan belt is engaging fan in front of radiator
(4) if electric fan check if fan activates once car has heated up
(5) check oil level of engine on dip stick. If low oil add some oil and re check oil dip stick. DO NOT PUT whole oil pack in (don't laugh I know someone who did this and has to go to mechanic and get oil removed)
(6) if rubber hoses blow off connectors then you may have a broken head gasket seal. A pressure test of the radiator will confirm this.
(7) Possible water pump failure. Check by taking cap off radiator and run engine see if water is flowing in radiator and test if water is heating up in the radiator. Remember to put cap back on radiator when finishing test.
(8) check if bubbles or oil are in radiator water this could indicate a blown head gasket problem also.
10/20/2014 11:08:07 PM •
Mitsubishi...
•
Answered
on Oct 20, 2014
My check engine light is
Bank 1 is the converter on the side that engine cylinder one is on. Yes that is true about the converter, the computer is programmed for a certain value, an aftermarket cat will not meet that value and the check engine lite will be triggered.
How do u know if the thermostat is working?
The best way to check a thermostat is to put it into a container of hot water with a thermometer and watch to see if it opens. The opening temperature is usually stamped on the thermostat somewhere. If you'd rather not remove the thermostat from the vehicle, you can run the engine for 5 minutes and see if the electric cooling fan cycles. Most V6 motors will reach operating temperature by then in springtime weather. Can't really do that if the fan is mechanical (attached to the motor). If Your temperature needle on the dashboard hasn't moved at all by 5 minutes, you either have a bad temperature sensor or the thermostat is stuck open. To rule out the temperature sensor, feel the upper radiator hose. If the hose is hot, your sensor is bad or has a bad connection. If the hose is cold, your thermostat is probably stuck open. If the thermostat is stuck closed, you'll usually have overheating and boil-overs from the coolant tank. Hope this helps.
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